Data/hora: 04/06/2024 17:36:22

Provedor de dados: | 103
País: | Brazil
Título: | Spatial diversity patterns of birds in a vegetation mosaic of the Pantanal, Mato Grosso, Brazil
Autores: | Signor,Cleiton Adriano; Pinho,João Batista.
Data: | 2011-12-01
Ano: | 2011
Palavras-chave: | Additive diversity; Beta diversity; Flood plains; Regional migration.
Resumo: | In this contribution we characterize the spatial diversity of bird populations in a heterogeneous landscape with respect to vegetation in the northern Pantanal region of Brazil. The method of additive partitioning of species diversity (γ = &amp;#945; + β) was used. Samples were collected in a grid with 30 sampling plots within a 25 km² area (5 x 5 km). A total of 163 bird species were found, comprising 114 resident species and 49 regional migrants. Most species were restricted spatially, with 58% found in a maximum of five sampling plots, while 15% were found in only one plot. The beta diversity comprised 77% of total diversity and was lower for residents than for regional migrants (66% and 88%, respectively). This suggests greater spatial heterogeneity in diversity patterns for regional migrants. Seasonal availability of resources caused by changing water levels as well as anthropogenic influences may also play a role in species diversity patterns by influencing species composition across sampling plots. High beta diversity and species-specific habitat occupancy suggest that conservation and management strategies should be implemented at a regional spatial scale and focus on the conservation of this environmental mosaic.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000600005
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S1984-46702011000600005
Formato: | text/html
Fonte: | Zoologia (Curitiba)  v.28 n.6 2011
Fonte: | info:eu-repo/semantics/openAccess